关于矿井瓦斯爆炸超压规律的预测和分析  

Overpressure Prediction of Mine Gas Explosions

作　　者：段玉龙[1,2] 周心权[1] 姜伟[1] 昌伟伟[1] 贾雨成[1] 龚武[1,2] 

机构地区：[1]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083 [2]河南省煤矿瓦斯与火灾防治重点实验室,河南焦作454003

出　　处：《煤矿安全》2009年第12期1-4,共4页Safety in Coal Mines

基　　金：国家"十一五"科技支持计划资助项目(2006BAK03B05);煤炭资源与安全开采国家重点实验室2008自主课题资助项目(SKLCRSM08B12);河南省煤矿瓦斯与火灾防治重点实验室开放基金资助项目(HKLGF200903)

摘　　要：为了能较好的对矿井独头巷道瓦斯爆炸的超压进行预测,在相似定律、TNT当量理论的基础上,对管道瓦斯爆炸实验的超压测点距离进行了换算,结合矿井瓦斯爆炸超压实验数据,建立了相应的矿井瓦斯爆炸超压预测模型,并通过50m3、100m3、200m3瓦斯-空气混合气体的矿井瓦斯爆炸实验对此预测模型进行了验证:此预测模型对于体积分别为50m3、100m3、200m3的瓦斯-空气混合气体爆炸实验超压的预测平均相对误差依次为7.56%、6.01%、14.88%,对于50m3、100m3的超压预测较好,对于200m3的预测效果相对较差。此预测模型可以应用到几何成比例、浓度相同、不同体积的矿井瓦斯-空气混合气体爆炸超压预测。总体来说,此超压预测模型误差较小,预测值和实验值吻合较好。In order to predict the overpressure of a full-scale mine gas explosion of blind airway better.One predicting mathematical model was established based on similar law,TNT equivalent theory,conversion of the overpressure testing points of pipeline gas explosion experiments,the data of mine gas explosion experiments.And it was testified by 50m3、100m3、200m3 mine gas-air explosion experiments.The results show that the average relative error to 50 m3gas-air explosion is 7.56%,6.01%to 100 m3 gas-air explosion,and 14.88%to 200 m3.It could predict the overpressure of 50 m3 and 100 m3 gas explosion better than that of 200 m3.The model could also be used to the mine gas explosion experiments with the same geometry,the same concentration and different volume. On the whole,the error of the overpressure predicting model is small,experimental data and predictive value is in good agreement.

关 键 词：瓦斯爆炸 相似理论 超压 

分 类 号：TD712.71[矿业工程—矿井通风与安全]